TOE 8840
Single-Output and Dual-Output Power Supplies up to 160 W
A proven concept
has been used for the new, systemcompatible single-output and dual-output power supplies of the TOE 8840 and TOE 8850 series.
Exceptional specifications are achieved with a total output power of 160 W or 320 W as a result of the classical in-phase control principle.
A total of 22 different models deliver voltages up to 130 V and currents up to 20 A. With a resolution of 12 bits in the voltage and current ranges, a simple and convenient user interface, and the excellent specifications, these instruments are suitable for both manual and busbased modes.
Integrated measurements
A further significant characteristic is the high-resolution measurement of the voltage and current values; these are output on 4-digit LED displays and can be read at a high rate in bus mode.
This means that additional measuring instruments are usually superfluous.
Adjustment using incremental spinwheels
The output values are adjusted with a selectable sensitivity using wear-free incremental spinwheels, thus permitting reliable and precise adjustment of the output voltage and current even after many years of service.
Remote control (option)
All instruments can be remote-controlled in analog mode as well as via GPIB and RS 232 interfaces using the SCPI command set (SCPI: Standard Commands for Programmable Instruments). The system interfaces are characterized by a high response and measuring rate. In addition, instrument driver software is available under “LabView“.
Automatic calibration
Fast and convenient calibration of all output parameters is possible externally within a few minutes without any adjustment of trimmers or interventions in the instrument. This “software calibration“ can be carried out simply using the control elements or supported by a computer within a test system. The “software calibration“ provides an advantage which should not be underestimated when considering the regular calibration intervals which are becoming increasingly important in quality assurance systems.
Voltage or current source
Depending on the values set for the voltage and current, each power supply can be operated as a voltage source or a current source depending on the load conditions. All outputs can be connected in parallel or series without problem.
High performance and exemplary operating characteristics
Special features
- In-phase regulation
- Adjustment of voltage and current using wear-free incremental spinwheels
- Maximum precision using μP-controlled autocalibration
- System-compatible with GPIB and RS 232 interfaces (optional)
| Output 1 | Output 2 | ||||
| Model | Voltage | Current | Voltage | Current | Power |
| Single-output power supplies TOE 8841-24 TOE 8841-32 TOE 8841-40 TOE 8841-64 TOE 8841-130 |
0 - 24 V 0 - 32 V 0 - 40 V 0 - 64 V 0 - 130 V |
0 - 6,5 A 0 - 5,0 A 0 - 4,0 A 0 - 2,5 A 0 - 1,2 A |
– – – – – |
– – – – – |
160 W 160 W 160 W 160 W 160 W |
| Dual-output power supplies TOE 8842-24 TOE 8842-32 TOE 8842-40 TOE 8842-64 TOE 8842-130 |
0 - 24 V 0 - 32 V 0 - 40 V 0 - 64 V 0 - 130 V |
0 - 3,25 A 0 - 2,5 A 0 - 2,0 A 0 - 1,2 A 0 - 0,6 A |
0 - 24 V 0 - 32 V 0 - 40 V 0 - 64 V 0 - 130 V |
0 - 3,25 A 0 - 2,5 A 0 - 2,0 A 0 - 1,2 A 0 - 0,6 A |
2x 80 W 2x 80 W 2x 80 W 2x 80 W 2x 80 W |
Tracking function
The automatic tracking mode with dualoutput power supplies means that it is possible to control the output voltage of output 2 as a function (0 % to 100 %) of output 1 with retention of all control properties.
Remote control
Command syntax in accordance with IEEE 488.2 with command set switchable between compatible TOELLNER commands and SCPI commands.
GPIB interface (option)
Interface connection in accordance with IEEE 488.1; electrically isolated from main outputs. The device address can be set as desired per menu.
Setting rate: approx. 25 settings/s
Measuring rate: approx. 20 measurements/s
RS 232 interface (option)
9-pin D-SUB connector; electrically isolated from the main outputs. Transfer: half-duplex mode, asynchronous; 110 to 19200 baud adjustable permenu.
Setting rate: approx. 20 settings/s
Measuring rate: approx. 15 measurements/s
Additional functions
These modern, proven and exceptionally well equipped power supplies are additionally characterized by supplementary functions such as the saving of 100 instrument settings, the standby circuit for the power outputs, sense and tracking modes.
Price and performance
In addition to the exceptional specifications and characteristics, all power supplies of the TOE 8840 and TOE 8850 series have a remarkable price/performance ratio.
Common operating functions
Anzeige Voltage und Current:
Display of voltage and current: separately on two 4-digit displays for all single instruments; on two selectable 4-digit V/A displays for the dual instruments. Constant voltage or constant current mode is indicated by single LEDs.
Nonvolatile memory for 100 complete instrument settings and the last setting when switching-off.
Special features
- In-phase regulation, thus extremely low residual ripple, below 300 μVrms (depends on model)
- Operation possible as voltage source or current source
- No switch-off peaks and no transients at output
- Extremly high long-term stability
- Resistant to continuous load
- Extremly quiet
- 100 complete instrument settings can be saved resistant to power failure.
- RS 232, GPIB interface optional
- Analog interface optional, floating also possible
- Free LabViewTM driver
- Electrically isolated outputs
- As desktop unit with adjustable feet or for 19“ mount or 19“ adapter for rack mounting
Outputs
- Floating for all models
- Electrically isolated in the dual-output power supplies
- Series and parallel connections possible
- Safety sockets at front
| Single-output power supplies Model |
TOE 8841-24 |
TOE 8841-32 |
TOE 8841-64 |
TOE 8841-130 |
|
| Output data | Voltage Current |
0 - 24 V 0 - 6.5 A |
0 - 32 V 0 - 5 A |
0 - 64 V 0 - 2.5 A |
0 - 130 V 0 - 1.2 A |
| Setting resolution | Voltage Current |
10 mV 2 mA |
10 mV 2 mA |
20 mV 1 mA |
100 mV 1 mA |
| Setting accuracy | Voltage Current |
0.1 % + 15 mV 0.2 % + 10 mA |
01 % + 20 mV 0.2 % + 4 mA |
01 % + 20 mV 0.2 % + 2 mA |
01 % + 100 mV 0.2 % + 2 mA |
| Deviation in regulation with 100 % change in load |
Voltage Current |
5 x 10-4 2 x 10-4 |
5 x 10-4 2 x 10-4 |
2 x 10-4 10-3 |
2 x 10-4 2 x 10-3 |
| With change in line voltage ± 10 % |
5 x 10-5 | 5 x 10-5 | 5 x 10-5 | 5 x 10-5 | |
| Regulation time with change in load from 20 % to 100 % Tolerance: 0.2 % Urated |
< 100 μs | < 100 μs | < 80 μs | < 80 μs | |
| Residual ripple (10 Hz - 1 MHz) | Voltage Current |
0.4 mVrms 300 μArms |
0.4 mVrms 200 μArms |
0.8 mVrms 100 μArms |
1 mVrms 50 μArms |
| Measuring accuracy | Voltage Current |
0.1 % + 25 mV 0.2 % + 10 mA |
0.1 % + 30 mV 0.2 % + 4 mA |
0.1 % + 40 mV 0.2 % + 2 mA |
0.1 % + 200 mV 0.2 % + 2 mA |
| Temperature coefficient | Voltage Current |
10-4/K 10-4/K |
10-4/K 10-4/K |
10-4/K 10-4/K |
10-4/K 10-4/K |
| Dual-output power supplies Model |
TOE 8842-24 | TOE 8842-32 | TOE 8842-64 | TOE 8842-130 | |
| Output data | Voltage Current |
2 x 0 - 24 V 2 x 0 - 6.5 A |
2 x 0 - 32 V 2 x 0 - 5 A |
2 x 0 - 64 V 2 x 0 - 2.5 A |
2 x 0 - 130 V 2 x 0 - 1.2 A |
| Setting resolution | Voltage Current |
10 mV 2 mA |
10 mV 1 mA |
20 mV 1 mA |
100 mV 1 mA |
| Setting accuracy | Voltage Current |
0.1 % + 15 mV 0.2 % + 4 mA |
01 % + 20 mV 0.2 % + 2 mA |
01 % + 20 mV 0.2 % + 2 mA |
01 % + 100 mV 0.2 % + 2 mA |
| Deviation in regulation with 100 % change in load |
Voltage Current |
2 x 10-4 2 x 10-4 |
2 x 10-4 5 x 10-4 |
10-4 10-3 |
10-4 2 x 10-3 |
| With change in line voltage ± 10 % |
5 x 10-5 | 5 x 10-5 | 5 x 10-5 | 5 x 10-5 | |
| Regulation time with change in load from 20 % to 100 % Tolerance: 0.2 % Urated |
< 80 μs | < 80 μs | < 80 μs | < 80 μs | |
| Residual ripple (10 Hz - 1 MHz) | Voltage Current |
0.4 mVrms 200 μArms |
0.3 mVrms 100 μArms |
0.6 mVrms 50 μArms |
1 mVrms 25 μArms |
| Measuring accuracy | Voltage Current |
0.1 % + 25 mV 0.2 % + 4 mA |
0.1 % + 30 mV 0.2 % + 4 mA |
0.1 % + 40 mV 0.2 % + 2 mA |
0.1 % + 200 mV 0.2 % + 2 mA |
| Temperature coefficient | Voltage Current |
10-4/K 10-4/K |
10-4/K 10-4/K |
10-4/K 10-4/K |
10-4/K 10-4/K |
| Main outputs | Floating and electrically isolated from the system interface |
| Insulation | ± 250 V against ground |
| Output sockets | On front of instrument with TOE 8840 On front of instrument and optionally at rear with TOE 8850. Standby-circuit of power outputs directly selectable. |
| Line voltage | 115 V/230 V ± 10 %, 47 Hz to 63 Hz |
| Power consumption | Approx. 370 VA |
| Protective measures | Protection class 1 in accordance with DIN 57411/VDE 0411 Part 1/IEC 348 |
| Operating temperature | 0 °C to 40 °C |
| Storage temperature | -20 °C to 70 °C |
| Reference temperature | 23 °C |
| Warm-up time | 30 min |
| Dimensions (WxHxD) | 265 x 147 x 330 mm |
| Weight | ca. 8 kg |
| Housing | Aluminium |
Incremental spinwheel
- Wear-free in contrast to potentiometers
- Selection of digit for coarse/fine adjustment
- No maladjustment of setting when switched off
- Protection of device-under-test when switching on the instrument
Safety/protective measures
- Polarity reversal prote
- Resistant to reverse current
- Overtemperature protection
- Keypad locking
Single-Output Power Supplies 160 W
| TOE 8841-24 | Power supply | 24 V / 6,5 A |
| TOE 8841-32 | Power supply | 32 V / 5 A |
| TOE 8841-40 | Power supply | 40 V / 4 A |
| TOE 8841-64 | Power supply | 64 V / 2,5 A |
| TOE 8841-130 | Power supply | 130 V / 1,2 A |
Dual-Output Power Supplies 2 x 80 W
| TOE 8842-24 | Power supply | 2 x 24 V / 3,2 A |
| TOE 8842-32 | Power supply | 2 x 32 V / 2,5 A |
| TOE 8842-40 | Power supply | 2 x 40 V / 2 A |
| TOE 8842-64 | Power supply | 2 x 64 V / 1,2 A |
| TOE 8842-130 | Power supply | 2 x 130 V / 0,6 A |
Optional
Single-output power supplies
Interfaces
| TOE 8861/015 | Remote control GPIB and RS 232 |
| TOE 8861/016 | Analog remote control |
| TOE 8861/017 | Floating analog remote control |
Dual-output power supplies
Interfaces
| TOE 8862/015 | Remote control GPIB and RS 232 |
| TOE 8862/016 | Analog remote control |
| TOE 8862/017 | Floating analog remote control |
Supplied accessories
- 1 power cord
- 1 instruction manual
- 1 RS 232 interface cable (only with TOE 8861/015 or TOE 8862/015 option)
Free basic driver for LabViewTM found at the buttom.
The instruments of the TOE 8840 series can be equipped either with a GPIB/RS 232 or an analog remote control.
Simultaneous fitting of both options is not possible.